Blower.



'UNITED vSFA-Tas PATENT OFFICE.

CHARLES n. BICALKY, oFv BUFFALO, NEW'YORK.

eLowi-zn.

sPEcmcArIoN forming par; of Letters Patent No. 629,12*;1, dated July is, 189e. Application led February 33, 1899. Serial No. 706,515. (No modem' other purposes; but the invention is also ap?` plicable to other wheels having Win gs or paddles, such as Water-Wheels. f

The object of my invention is to so construct the blower that the same can be stamped out of sheetnietal and 'made of a minimumlnumb'erof parts, producing a strong and light blower which can be cheaply manufactured. In the `accompanying drawings, Figure l. is

a side elevation of my improved blower. Fig.A

2 is a plan or edge view thereof.. Fig. 3 is a longitudinal section of the same in line 33,

Fig. 1. Fig. ALisa view of one of the blanks from which the halves or sections of the gles to the axis of the blower.

. and 6.

blower'are formed. Figs. 5 and 6 are perspective views ofthe two parts of the blower,`show ing the same stamped' into proper form preparatory to being secured together to com plete the blower. Fig. 7 is an enlarged cross-section of one of the arms ofthe blower. Fig. 8 is a longitudinal section similar to Fig. 3, showin g a modified construction of the blower. Fig. J is a. view of one of the blank-s from which the sections of thismodified blower are formed. Likeletters of reference refer to like parts in the several figures.

' A is the central or hub portion of the blower; B, the arms radiating therefrom;v C, the wings or fan-blades arranged on the arms, and D the dished rings or disks forming the sides-of the blower. The blower is composed of two similar sheet-metalsections or halves which meet in a jointY arranged at right an- Each of these sections comprises one-half of the central portion A, the arms B, and the wings C, these three portions of each half or section being formed in a-single piece, as shown in Figs. 5

blower are bent outwardly in opposite'directions, and when the two sections are placed against each other with their arms in coincidence the opposing half-wings thereof tois formed to the next wing.

The half-wings of each section of the gether form the complete wings of `the blower, as shown in Fig'. 2, while the contiguous arms and hub portions of the sections form acomv plete hub portion and arms containing a doulble thickness of metal, as shown in Fig. The two sections are secured together by bolts or rivets whichpass through the arms and hub portions of the sections, as shown, or by other fastenings. The rings D may be made separate from or formed on the fan-blades, as desired. In blowersof comparatively small size-say not exceeding five feet in diam eter-it is desirable to'form the rings integral 'with the wings, and in this case each wing preferably consists of las many segments d' as there are arms B, and each segment extends from the outeredge of the wing on which it The free end of each segment overlaps the segment formed on the next succeeding wing and is'bolted or riveted to the latter, as shown in Figs. and 6or otherwise fastened thereto. When the blower-sections are'provided with such integral segments, each section is stamped kfrom a flat blank cut to the form shown in Fig. 4.-, y

the arms of the blank being provided vat one edge with lateral wings, lwhich` ultimately form thehalf-blades of theblower, and these wings having contracted segmental estensions which form the rings. The sections are stamped between suitable` dies which bend the wing portions C at the proper angle to the arm portions B and bend the ring-segments d at right angles to the wing portions to bring the same in a parallel plane with the arm portions.

In the modied construction shown in Figs. 8 and 9 the rings B are made separate from the blower-Wings, and the latter are provided at .their outer edgeswith angular flanges e, to

the outer sides of which the rings are fastened. In this construction the ring-seg; mentsl are omitted fromk the blank, as shown in Fig.- 9; and .the wings areformed with nar-V row extensions e, which form the flanges for the'attachment' of the rings.

The lateral stiffness of 'the arms B is comparatively small in a line intersecting the same at the base or inner edge of the blowerwings, as indicated at f, and in order to stien the arms at this point they are provided with raised longitudinal ribs or embossments f',

which are formed by indenting or depressing the metal of the arms on their inner side, asA

most clearly shown in Figs. 3, 5, 6, and 7. These strengthening-ribs are' of sulieient lengthto bridge or extend across the weak portions 'f of the arms, so as to eifectually prvent lateral deflection of the arms.

The two plates forming the blower are perfrated centrally to receive a separate hubG for securing the blower to a shaft. This hub may be of any suitable form and is rigidly secured in the axial opening of the blower by any suitable means; but I prefer to employ a east-metal hubof polygonal orilat-sided form, as shown in the drawings, and to pro,

vide the blower-sections around their correspondingly-shaped hnb-openngs with outwardly-extending collars h to form a more extensive holding and attaching surface for anced. Being made up-of but two principal:l parts, 'it can be quickly assembled, saving time and labor, and as each of its sections is stamped complete in a single piece it can be produced at considerably less cost than blowers ofordinary construction.

I claim as my inventionl l. A blower or similarwheel, composed of two like sheet-metal sections, each comprising a central or hub portion, arm portions radiating therefrom and arranged at right angles to the axis of the wheel, and half-wings extending outwardly from the front edges of said arm portions, the hub and arm portions and half-Wings of each section being stamped from a single blank and the arm portions of the two sections being secured together side by side to complete the wheel, whereby each arm of the completed wheel contains two thicknesses .of metal, vsnbstantially as set forth. s

two like sheet-metal sections, each comprising a central or hub portion, arm portions radiating therefrom and. arranged at right an gles to the axis of the wheel, and half-wings extending outwardly from the front edges of said arm portions, the'arm portions of the two sections being secured together side by side to complete the wheel, and each arm portion being provided on its inner side with a longitudinal groove or depression which extends across the junction of the arm with the l'iubl portion of the same section and which forms a raised hollow stiiTening-rib on the outer side 'of ther arm, substantially as set forth.

3. A blower or similar wheel, composed of -two similar sections, each comprising a central or hub portion, arms radiating therefrom and arranged at right angles to the axis of the wheel, half-wings extending outwardly from the front edges of .said arms, and ring-segments formed at the outer edges of the halfwingsand arranged at right angles thereto and each extending from the wing on which it is formed to the rear end of the next suc- @ceding segment, substantially asset forth.

4. A blower or similar wheel, composed of two similar sheetmetal sections, each coniprising avcentral or hub portion, arms radiating therefrom and arranged at right angles to the axis of theavheel, halQ-wings extending outwardly from the front edges of said arms, and ring-segments formed at the outer edges of the half-wings and arranged at right angles thereto, the free end of each segment overlapping the next succeeding segment and vbeing secured thereto, substantially as set forth. e p

Witness my hand this 16th day of February, 1899.

. CHARLES ll. BICALKY.

lVitnesses:

CARL F. GEYER, ELLA R. DEAN.

. l I 2. A blower or similar wheel, composed of 

